Upconversion luminescence, intensity saturation effect, and thermal effect in Gd2O3:Er3,Yb3+ nanowires

2005 ◽  
Vol 123 (17) ◽  
pp. 174710 ◽  
Author(s):  
Yanqiang Lei ◽  
Hongwei Song ◽  
Linmei Yang ◽  
Lixin Yu ◽  
Zhongxin Liu ◽  
...  
Nanoscale ◽  
2020 ◽  
Vol 12 (39) ◽  
pp. 20300-20307 ◽  
Author(s):  
Anna Borodziuk ◽  
Michał Baranowski ◽  
Tomasz Wojciechowski ◽  
Roman Minikayev ◽  
Bożena Sikora ◽  
...  

We resolve a long standing discrepancy between various reports on the effect of the magnetic field on up-converted luminescence.


Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10220-10228 ◽  
Author(s):  
Shuai Wang ◽  
Bin Shen ◽  
Han-Lin Wei ◽  
Zixiao Liu ◽  
Zhigang Chen ◽  
...  

The factors influencing upconversion luminescence, the energy transfer mechanism and their thermal effect in Nd3+-doped nanoparticles were comprehensively investigated.


2016 ◽  
Vol 16 (4) ◽  
pp. 3883-3885 ◽  
Author(s):  
Shihu Liu ◽  
Peng Zhang ◽  
Daguang Li ◽  
Min Lan ◽  
Zhe Wang ◽  
...  

Monodisperse water-soluble LaF3: Yb3+/Er3+ nanocrystals (NCs) have been successfully fabricated via a fast, facile, and environmentally-friendly polyol process with polyvinylpyrrolidone (PVP) as an amphiphilic surfactant. The obtained NCs with a small size of 18 nm can be well dispersed in hydrophilic solutions. Meanwhile, their upconversion (UC) luminescence intensity was increased through Ca2+ doping due to the decrease of symmetry around rare earth ions.


2011 ◽  
Vol 176 (14) ◽  
pp. 1041-1046 ◽  
Author(s):  
Qiang Lü ◽  
YingJun Wu ◽  
AiHua Li ◽  
Yang Wang ◽  
Yang Gao ◽  
...  

Author(s):  
Liu Jiping ◽  
Fang Zhuqing ◽  
Wang Yinjie ◽  
Han Jia

Since the discovery of glare illuminators, considerable efforts have been devoted to achieving a breakthrough of high light intensity on the order of magnitude. In this paper, we prepared strong flash blinding agents for the first time by using aluminum powder, oxidant, and adhesive as the main materials, and tris-(8-hydroxyquinolinato) aluminum (Al2q3), triazoindolizine, or nano zinc oxide, etc. as electronic output brightener after mixing and granulation according to the developed formulation. It was discovered that the luminescence intensity was related to the thermal effect of the substance while the brightener only served as an auxiliary brightening effect to achieve energy non-destructive conversion. With the same formula, the luminescence intensities of glaze agents with ADN and potassium perchlorate as oxidants were slightly higher than that of ammonium perchlorate oxidant; the brightening effect of nano-zinc oxide was slightly higher than those of tris-(8-hydroxyquinolinato) aluminum (Al2q3) and triazoindolizine. The luminescence intensity of the substance with a high thermal effect value was high, but the luminescence time was slightly short. Under identical conditions, the luminescence effect of nano-aluminum powder was obviously better than that of micro-aluminum powder with the highest luminescence intensity of 3.9 × 1010 ~ 1.9 × 1011 cd and the luminescence time of 39 - 48 ms. The effects of shell material and structure and the effect of heat-induced mode on the luminescence intensity were also investigated. The luminescence intensity of the glare agent with a high shell strength was high, but the luminescence time was slightly short. Moreover, the energy level of the brightener is excited under the induction of high temperatures, which leads to a blue shift to promote the chemical reaction of the material in a favorable direction. Finally, the optical radiation of the thermally induced high-temperature combustion system was analyzed from the aspects of thermal effect, combustion temperature, and chemiluminescence effect. A way to improve the optical radiation intensity of a high-temperature combustion system was proposed.


2015 ◽  
Vol 3 (38) ◽  
pp. 9869-9876 ◽  
Author(s):  
Dekang Xu ◽  
Hao Lin ◽  
Anming Li ◽  
Shenghong Yang ◽  
Yueli Zhang

Simultaneous upconversion luminescence intensity and color tuning in Gd2O3:Yb/Er through matrix doping with GdOF.


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